part.n

I've screwed up my laptop . Please help. When I bought my dell inspiron 1564, its hard disk came pre formatted in following setup: part.(ition) 0 100 mb boot, part. 1 30 gb empty, part. 2 30 gb empty n part. 3 240 gb empty. I also have an old P4 machine running xp. On it I had could partition...